Did Mary tell the apostles anything in the upper room?
Luke, the author of Acts of the Apostles, doesn’t mention any conversations between Mary and the apostles as they wait in the upper room. He specifically mentions her presence in 1:14, but aside from that, we don’t know anything about what they may have discussed as they waited.
It seems likely that Mary would have been treated with respect by the apostles. As the mother of Jesus, she would have been a terrific source of information about his early life if they wanted to know more. But all this is speculation, given that the Scriptures don’t give any record of their conversations.